According to Douban.com, the movie Singin' in the Rain is a classic Hollywood musical, which is produced by MGM Film Company, directed by Stanley Donen and gene kelly and starring gene kelly and debbie reynolds. Its musical style mainly belongs to jazz. Jazz is a genre of music originating from the United States, which is famous for improvisation, complex chord progression and unique sense of rhythm. In Singin' in the Rain, fast-paced jazz became the background music of the dance and plot in the film, adding vitality and charm to the film.